“微信扫一扫”进入题库练习及模拟考试
初中数学七年级下册（573题）
若二元一次方程组\(\left\{ {\begin{array}{*{20}{l}} {x + y = 3} \\ {3x - 5y = 5} \end{array}} \right.\)的解为\(\left\{ {\begin{array}{*{20}{l}} {x = a} \\ {y = b} \end{array}} \right.\)，则\(a - b = \)___．
知识点：第八章 二元一次方程组
参考答案：2
“微信扫一扫”进入题库练习及模拟考试
若二元一次方程组\(\left\{ {\begin{array}{*{20}{l}} {x + y = 3} \\ {3x - 5y = 5} \end{array}} \right.\)的解为\(\left\{ {\begin{array}{*{20}{l}} {x = a} \\ {y = b} \end{array}} \right.\)，则\(a - b = \)___．
参考答案：2